I suppose finding a DOA lying in a pool of blood with a bullet hole in the head I would say he died under suspicious circumstances. (;->) Sometimes the "levels" are reversed, for example at the airport I worked at they were. A flight arriving under "condition 4" was the lowest, crash not likely, usually smoke in the cockpit which is more common than you think. A "condition 1" was a full alert, crash inevitable, thankfully there was only one (Fedex, ha ha) in the 7 years I was there. No, any landing you can walk away from is a good landing and they did but the plane blew up minutes afterward. Sorry, today's deliveries are cancelled.
BTW, firemen and EMTs are more likely to answer questions than cops so why not trot on down and ask? I'll bet they'll be glad you take an interest in thier activities and you'll get more of a welcome than you expect.
As possibly told by Jeff Foxworthy;
If the county dispatcher taps out your local fire company and you see two guys running down the street carrying a ladder and one has a fire extinguisher under his arm, there's no point asking them any questions about your scanner. On the other hand, if they call for mutual aid and a Dalmatian shows up, you may consider asking the Dalmatian.